fixed a bug with the json serialization when the class setting is set to not include the root, but an instance is serialized with the root option passed as true

1 files changed, 10 insertions, 0 deletions

diff --git a/activemodel/test/cases/serializers/json_serialization_test.rb b/activemodel/test/cases/serializers/json_serialization_test.rb
index 5e1e7d897a..40fdcf20ca 100644
--- a/activemodel/test/cases/serializers/json_serialization_test.rb
+++ b/activemodel/test/cases/serializers/json_serialization_test.rb
@@ -56,6 +56,16 @@ class JsonSerializationTest < ActiveModel::TestCase
     end
   end
 
+  test "should include root in json (option) even if the default is set to false" do
+    begin
+      Contact.include_root_in_json = false
+      json = @contact.to_json(:root => true)
+      assert_match %r{^\{"contact":\{}, json
+    ensure
+      Contact.include_root_in_json = true
+    end
+  end
+
   test "should not include root in json (option)" do
 
     json = @contact.to_json(:root => false)